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from pyflink.common import Row
from pyflink.datastream.functions import CoMapFunction


def str_len(value):
    return Row(value[0], len(value[0]), value[1])


def add_one(value):
    return Row(value[0], value[1] + 1, value[1])


def m_flat_map(value):
    for i in range(value[1]):
        yield Row(value[0], i, value[2])


class MyCoMapFunction(CoMapFunction):
    def map1(self, value):
        return str_len(value)

    def map2(self, value):
        return add_one(value)
